
#p3 {
    background: url("../../image/subject/ditu.png");
    width: 1280px;
    height: 720px;
    margin: auto;
}
#p3y0x1{
    width:50%;height:100%;float:left;
}
#p3y0x2 {
    width: 30%;
    height: 100%;
    float: right;
}

#p3y0x2x0 {
   /*  width: 50%;
   height: 100%; */
    float: left;
}
.subject-content {
    width: 1280px;
    height: 670px;
    margin:0 auto;
}

.subject-top {
    width: 100%;
    height: 450px;
}

.subject-top-left {
    width: 670px;
    height: 450px;
    box-sizing: border-box;
    padding-top: 129px;
    padding-left: 120px;
    float: left;
}

.subject-top-left h1 {
    font-size: 57px;
    line-height: 60px;
    color: #F98F1E;
}

.subject-top-left p {
    font-size: 18px;
    color: #fff;
    line-height: 28px;
    margin-top: 22px;
}

.subject-top-right {
    float: right;
    width: 610px;
    height: 450px;
}

.subject-top-right:focus img {
    box-sizing: border-box;
    border: 3px solid #fff;
}

.subject-top-right img {
    margin-top: 66px;
    margin-left: 40px;
    width: 437px;
    height: 314px;
}

.subject-top-right p {
    margin-left: 40px;
    margin-top: 20px;
    font-size: 24px;
    line-height: 30px;
    color: #fff;
}

.subject-bottom {
    width: 100%;
    height: 240px;
    padding: 0 60px;
    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
    overflow: hidden;
}

.subject-list {
    width: 1080px;
    height: 240px;
    overflow: hidden;
}

.subject-list ul {
    width: 1080px;
    height: 240px;
}

.subject-list ul li {
    width: 270px;
    height: 240px;
    box-sizing: border-box;
    float: left;
    padding: 20px;
}

.subject-list ul li:focus img {
    box-sizing: border-box;
    border: 3px solid #fff;
}

.subject-list ul li img {
    width: 100%;
    height: 160px;
}

.subject-list ul li p {
    width: 240px;
    line-height: 40px;
    font-size: 18px;
    color: #fff;
    height: 40px;
    overflow: hidden;
}

.subject-back {
    width: 100%;
    height: 50px;
}

.subject-back img {
    float: right;
    margin-right: 96px;
    margin-top: 10px;
}

/* 左右箭头 */
.left_arrow {
    width: 26px;
    padding: 0 7px;
    height: 100%;
    display: flex;
    align-items: center;
    box-sizing: content-box;
}
.right_arrow {
    width: 26px;
    padding: 0 7px;
    height: 100%;
    display: flex;
    align-items: center;
    box-sizing: content-box;
}